Since openSUSE is a community driven project the candidate will have
to work with the openSUSE community prior experience with FLOSS
communities will be a plus. The candidate will work with several senior
graphical designers at SUSE.
According to the posting:

The openSUSE
Team, together with the openSUSE community develop a wide variety of
activities that requires design skills, such as the distribution itself,
tools interfaces, merchandising, etc.. The candidate will lead the
openSUSE Team in this area becoming part of the community effort in the
artwork team. As part of the openSUSE Team, he will.

The responsibilities include:

Lead openSUSE Team efforts related with UI and graphical design.

Work closely with developers to create user interfaces and improve the openSUSE user experience.